/********************************************************************************
 * Copyright 2009 The Robotics Group, The Maersk Mc-Kinney Moller Institute,
 * Faculty of Engineering, University of Southern Denmark
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ********************************************************************************/

#ifndef RW_SENSOR_CAMERALISTENER_HPP
#define RW_SENSOR_CAMERALISTENER_HPP

/**
 * @file CameraListener.hpp
 */

namespace rw { namespace sensor {

    /** @addtogroup sensor */
    /* @{ */

    /**
     * @brief interface used for listening for camera events
     */
    class CameraListener
    {
      protected:
        /**
         * @brief constructor
         */
        CameraListener ();

      public:
        /**
         * @brief destructor
         */
        virtual ~CameraListener ();

        /**
         * @brief called when the camera wish to signal a change.
         */
        virtual void notifyChanged () = 0;

      private:
        CameraListener (const CameraListener&);
        CameraListener& operator= (const CameraListener&);
    };

    /* @} */
}}    // namespace rw::sensor

#endif    // end include guard
